Building Code and Land Use

Building code and land use questions for property in unincorporated King County can be answered by the Department of Permitting and Environmental Review. If your question concerns property within an incorporated city, please contact that municipality.

Note regarding Code

All laws of a permanent or general nature must be incorporated into and become a part of the King County Code. The contents of the King County Code establish prima facie the laws of King County that are of a permanent or general nature.

If there is an omission or an inconsistency between the code and an ordinance, the ordinance controls. Failure to codify an ordinance does not affect the applicability of the ordinance as law. (K.C.C. 1.02.070). To view an electronic copy of an ordinance, go to the legislative archive. You may also contact the Clerk of the Council at clerk.council@kingcounty.gov for more information.

This electronic version of the code is made available for your research use and convenience, Please notify the Clerk's Office if you identify errors in electronic conversion or transmission, so that we may correct them.